NOTE: the base functionality of the awareness application consists of a few design objects.
注意：提醒应用程序的基本功能由一些设计对象组成。
Base class sub-objects may have zero size.
基类子对象可以具有零大小。
This is a base class for other code expression objects that is never instantiated.
这是其他从不实例化的代码表达式对象的基类。
This is a base class for other code expression objects that is never instantiated.
这是其他从不实例化的代码表达式对象的基类。
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